Trolley-wheel.



W. F. SWOVBLAND.

TBOLLEY WHEEL.

APPLICATION FILED JAN. 14, 1910.

Patented Aug. 13, 1912.

2 SHEETSSHEET 1.

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W. F. SWOVEL AND.

TROLLEY WHEEL.

APPLICATION FILED JAN. 14, 1910.

Patented Aug. 13, 1912.

2 SHEETS-SHEET 2.

U P MHI U attoamw COLUMBIA PLANOGIAPH 30.. WASHINGTON. D. C.

ITED STATES PATENT OFFICE.

WILLIAM F. SWOVELAND, 0F ALTOONA, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TOWILBERT C. FLETCHER, OF ALTOONA, PENNSYLVANIA.

TROLLEY-WHEEL.

To all whom it may concern:

Be it known that I, l/VILLIAM F. Swovn- LAND, a citizen of the UnitedStates, residing at Altoona, in the county of Blair and State ofPennsylvania, have invented certain new and useful Improvements inTrolley-Wheels, of which the following is a specification.

The present invention relates to overhead and similar trolleys forelectric railways, and the like, and the primary object is to provide asimple structure, which will conform to the inequalities of the wire, isprovided with means for protecting the crosswires against injury fromthe wheel, and is thoroughly lubricated, so that wear is reduced to aminimum, and constant attention is not required.

Two embodiments of the invention are disclosed in the accompanyingdrawings, wherein Figure 1 is a vertical sectional view through one ofsaid embodiments. Fig. 2

is a view partially in section at right angles to Fig. 1. Fig. 3 is avertical sectional view through another embodiment of the invention.Fig. 4 is a view at right angles to Fig. 3, and partially in section.

Similar reference numerals designate corresponding parts in the figuresof the drawings.

Referring first to the embodiment disclosed in Figs. 1 and 2, a polehead is shown at 5, and has in its upper portion, an internal chamber 6,from which extends a flared bore or socket 7 having in opposite walls,recesses 8 forming bearing shoulders 9. A journal pin 10 has a crosshead 11 that is seated in the sockets 8 against the bearing shoulders 9,this pin 10 projecting beyond the head, and having a reduced portion 12,the upper end of which is threaded to receive a nut 13 and washer 14.The outer end of the head has a circular bearing rib 15, and the headoutside of said bearing rib is beveled, as shown at 16.

The harp is designated generally by the reference numeral 17, and hasits lower end mounted on the journal pin, its base portion beingcut-away as shown at 18, and provided with a recess 19 to receive therib 15. The said pin projects into the harp, and a spring 20,surrounding said pin and inter- Specification of Letters Patent.

Application filed January 14, 1910.

Patented Aug. 13,1912. Serial No. 538,135.

posed between the washer 14 and base, serves to normally maintain theharp in alinement with the head, yet permitting the lateral swingingmovement of said harp, the spring always returning said harp after suchmove ment to properly alined position. Moreover the bore or socket 7 andthe beveled or out away portions 16 and 18 are so disposed with relationto each other that the pin 10 will strike one wall of the socket whenthe said beveled portions engage each other.

The arms 21 of the harp have their front portions connected by aforwardly extending guard lip 22 that thus bridges the space between thelower portions of said arms, and has its upper edge outturncd, as shownat 23. These arms are connected by a bearing axle or pin 21 having acentral enlarged portion 25. Rotatably mounted on the pin 24 are twosleeves 26, which in the present instance, are hollow to providelubricant-holding chambers 27. Access to these chambers is affordedthrough openings closed by plugs 28, and the lubricant from the chambersis permitted to flow to the bearings of the sleeves through ports 29.Mounted 011 the peripheries of the sleeves is the trolley wheel 30. inconnection with the mounting of this wheel it will be observed that thewheel is formed with openings in its sides, and the sleeves 26 (and 28referred to later) are suitably interlocked with the wheel within theside openings thereof so that the said sleeves will rotate with thewheel and at the same time be capable of sliding therein. The sleevesare urged toward each other, and a proper electrical connection is madebetween them and the harp by leaf springs 31 that bear against saidsleeves, and are secured, as indicated at 32 to the harp arms. Thetension of the springs 31 is reinforced by coiled springs 33 interposedbetween the springs 31 and the arms.

With the exception of the wheel mounting, the structure shown in Figs. 3and 4 is the same as that already described and illustrated in Figs. 1and 2. Therefore the same reference numerals have been employed.

In Figs. 3 and 4, however, the bearing pin, which is designated 25constitutes a lubricant reservoir, being provided with an internalchamber 26, access being obtained thereto through the medium ofremovable plugs 27 in the ends of said pin. Sleeves 28 are ournaled onthe exterior of the pin, and mounted on these sleeves, is the trolleywheel 29 Contact springs 30 bear against the outer ends of the sleeves,and are secured as shown at 31 to the harp arms,

while other springs 32* are coiled about the pin 25 and are interposedbetween the springs 30 and said arms.

From the foregoing, it is thought that the construction, operation andmany advantages of the herein described invention will be apparent tothose skilled in the art, without further description, and it will beunderstood that various changes in the size, shape, proportion and minordetails of con struction, may be resorted to without departing from thespirit or sacrificing any of the advantages of the invention.

Referring to the drawings further it will be noticed that the plane ofthe trolley wheel and the plane of the pole extension are offset withreference to each other, this construction giving what may be termed adrop harp, 2'. e. the wheel is dropped away from the harp poleextension. This construction facilitates in a very practical way the useof a larger trolley wheel without increasing the possibility of dangerto cross wires caused by the hooking action of the wheeland harp. Itwill be further noticed that the construction of the harp is such thatit serves as a protection to the cross wires and the trolley wireitself, the primary idea being to protect the copper wire and crosswires from any damage from the wheel harp.

Referring particularly to Fig. 1 of the drawings, it will be noticedthat the wheel 30 is provided with a key and key way which key 20engages the sleeve 26 providing means for rotating the sleeves with thewheel, thus making the inclined wearing surfaces more eifective.

Having thus fully described my invention,

what I claim as new, and desire to secure by Letters Patent, is

1. In a device of the class described, the combination of a supportcarrying an axle, a wheel having side openings, self-adjusting bearingsleeves rotatable with the wheel and slidably fitting in the sideopenings thereof, fiat springs arranged to exert an inward stress onsaid sleeves, and auxiliary coiled pressure springs arranged at theouter sides of the flat springs.

2. In a device of the class described, a

support carrying a double cone axle, a wheel having side openings,self-adjusting bearing sleeves slidably interlocked within the sideopenings of the wheel and having conical portions turning upon the conesof the axle, and yielding pressure means engaging the outer sides ofsaid sleeves.

3. In a device of the class described, the combination of a supportcarrying a double cone axle, a wheel having side openings, selfadjustingbearing sleeves slidably interlocked within said side openings andhaving conical portions turning on the cones of the axle, yieldingpressure means engaging the outer sides of the sleeves, and means fordirecting a lubricant directly to the conical bearings.

4:. In a device of the class described, the combination of a supportcarrying a double cone axle, a wheel having side openings, hol lowself-adjusting sleeves slidably interlocked within said openings andhaving conical portions engaging the cones of the axle, said sleevesalso being provided with lubricating ports leading to said cones, andpressure springs engaging the outer sides of the sleeves.

In testimony whereof I hereunto affix my signature in the presence oftwo witnesses.

IVILLIAM F. SWOVELAND.

Witnesses W. C. FLETCHER,

S. B. HARE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. G.

